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日本国产脐橙由于受柑桔速裹病的侵害,栽培面积持续减少,其主要原因是带强毒系的植株生产能力下降,果实变小,品质差.不能与进口脐橙竞争.日本果树试验场兴津支场于12年前开始进行利用弱毒系保护森田脐橙植株免受强毒系侵害的试验.供试的8种弱毒系是从试验场内数百株柑桔树中和从带强毒系的森田脐橙经热处理进行弱毒化后的植株中获得
Japanese navel orange due to the speed of the body caused by encroaching on the cultivation area continued to decline, the main reason is that plants with virulent strains decreased production capacity, the smaller the fruit, the quality is poor. Can not compete with imported navel orange. Tianjin branch office started 12 years ago the use of weak strains of Morita plant protection from virulent strains of the tested eight kinds of weak strains from the test site hundreds of citrus trees and from the Department of virulence Morita navel orange is harvested by heat treatment of plants that have been weakly poisoned